[sdiy] how you got started with your current µC?
Paul Maddox
yo at VacoLoco.net
Thu Sep 24 12:47:07 CEST 2015
Have to agree about the arm stuff...
just found a nice thing from freescale -
http://www.freescale.com/products/arm-processors/kinetis-cortex-m/k-series/k2x-usb-mcus/freescale-freedom-development-platform-for-kinetis-k22-mcus:FRDM-K22F
£19 for an eval board with debugger/programmer and 100Mhz ARM with
floating point.
On 20/09/2015 06:02, Terry Shultz wrote:
> Hi Guys,
>
> The ARM Cortex M series are getting a lot of new designs in the
> embedded space.
>
> Pretty cheap, tools aplenty, and plenty of inexpensive boards and
> projects. Having been a DSP 56k programmer at Motorola/Freescale for
> about 28 years,
> I find it fun to be able to use a C compiler and quit programming in
> assembly all the time.
>
> I have programmed the z-80 at E-Mu, 6808 and 68k at PPG and 6805,
> 6811, 680x0 and now ARM A and M series, I prefer working with the
> Cortex M4 and M0 for new audio
> projects. Arduino and Beagleboard are good places to get your chops
> and tune up.
>
> Proprietary devices are becoming the dinosaurs. The Coldfire devices
> were actually quite good but doomed when ARM launched Arm 9 and Arm 11
> then the A series.
>
> Try out the ST, NXP, Freescale Cortex M devices and see if you can get
> cooking quickly. All have a wide range of cheap platforms to play with.
>
> best always,
>
> Terry Shultz
>> On Sep 19, 2015, at 4:24 PM, Vinicius Brazil <brazil.v at gmail.com
>> <mailto:brazil.v at gmail.com>> wrote:
>>
>> I also ever use my own custom boards.
>>
>> Vincius
>>
>> On Sat, Sep 19, 2015 at 7:59 PM, <rburnett at richieburnett.co.uk
>> <mailto:rburnett at richieburnett.co.uk>> wrote:
>>
>> I started using dev boards for PICs about 20 years ago for
>> industrial projects, but these days I usually just go straight to
>> a first hash of the intended hardware...
>>
>> When you're just starting out it's nice to have a development
>> board that guarantees the correct power supply, clock and reset
>> signals are presented to the processor and a convenient method of
>> programming, so you don't have to worry about these things. It
>> also often provides a few other built-in features too like some
>> switches, some LEDs, pots, an LCD, RS-232 serial port, CAN port,
>> USB etc. However, I quickly realised that for most of the things
>> I was developing I didn't use half of the things on the dev
>> boards, and/or the quality of the Microchip dev boards was
>> actually quite poor.
>>
>> For instance Microchip's dsPICDem Dev Board only has a crappy
>> 8-bit 8kHz CODEC on board which is fine for telecoms quality
>> speech but completely useless for pro-audio applications, and
>> doesn't have proper analogue and digital ground-planes either.
>> It also doesn't have MIDI in/out, uses a different LCD to the
>> industry standard Hitachi alphanumeric standard, etc, and has
>> really crappy thumbwheel "preset" pots for the analogue inputs
>> that only last for about 10 turns before wearing out! For these
>> reason I usually make my own "dev Board" with just the features I
>> want on it to help me develop whatever I'm working on at the time.
>>
>> There's a lot to be said for knocking out the first version of
>> hardware as early as you can, then you find out about potential
>> hardware problems and deficiencies as early as possible. Ground
>> loops, unwanted noises, LCD glitches, switch bounces, etc...
>> Leaving more time to thing about and implement solutions.
>>
>> -Richie,
>>
>>
>> On 2015-09-19 22:46, Michael Zacherl wrote:
>>
>> I got curious:
>> did you people start with a typical dev-board of
>> PIC/AVR/STM32/... ?
>> m.
>>
>> On 19.Sep 2015, at 21:28 , Richie Burnett
>> <rburnett at richieburnett.co.uk
>> <mailto:rburnett at richieburnett.co.uk>> wrote:
>>
>> No probs here either.
>>
>> -Richie,
>>
>> ---- Pete Hartman wrote ----
>>
>> On Sat, Sep 19, 2015 at 4:43 AM, Gordonjcp
>> <gordonjcp at gjcp.net <mailto:gordonjcp at gjcp.net>> wrote:
>>
>> On Fri, Sep 18, 2015 at 10:40:37PM +0100, Tom
>> Wiltshire wrote:
>>
>> I'd probably have to agree. TL07x op-amps would
>> be my most used IC. Not very glamorous, but
>> they're the glue that holds a million audio
>> circuits together.
>>
>> Aside from that, PIC uPs for digital, and
>> SSM2164/V2164 for analog.
>>
>>
>> I've never liked PICs. They're slow, expensive and
>> very hard to develop for, thanks to the sheer lack of
>> support - and last time I looked you had to pay extra
>> for surface-mount!
>>
>> I used AVR for a bit but I'm moving over to STM32 -
>> ridiculously cheap and ridiculously fast.
>>
>> This must be a personal taste thing, as I have no
>> problems at all programming with PICs. The
>> documentation is very good, and there are lots of
>> examples to get over the most difficult part which is
>> how to set the various switches (in AVR world the
>> equivalent is the "fuses"). I've actually had more
>> frustration figuring out how to set fuses, to be
>> honest. I haven't played with the STM32s, I'll
>> certainly have to give that a try.
>>
>>
>> --
>> http://mz.klingt.org <http://mz.klingt.org/>
>>
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